Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
During the shift to September, Bailey records a mild decrease in average high-temperature, moving from a warm 74.7°F (23.7°C) in August to an agreeable 68.9°F (20.5°C). Bailey observes a substantial disparity between daytime high and the average low-temperature of 45°F (7.2°C) during September nights.Humidity
The average relative humidity in September is 51%.Rainfall
In Bailey, in September, it is raining for 13.5 days, with typically 1.5" (38mm) of accumulated precipitation. In Bailey, Colorado, during the entire year, the rain falls for 134.5 days and collects up to 19.65" (499mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 60.9 snowfall days, and 47.28" (1201mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:31 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:45 pm MDT.
Sunshine
In September, the average sunshine is 10.9h.UV index
In Bailey, Colorado, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 4 in September translates into this advice:
Undertake protective steps - Preventing sun damage is advised. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in Bailey in September?
When does it start snowing?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Bailey, CO
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in September: 45°F
The month with the highest average low temperature is July (51.8°F).
The coldest month (with the lowest average low temperature) is February (15.1°F).
Average pressure in September
Bailey, CO
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is April (29.92"Hg).
Average wind speed in September
Bailey, CO
- Average wind speed in September: 5.6mph
The windiest months (with the highest average wind speed) are February and March (7.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Bailey, CO
- Average humidity in September: 51%
The month with the highest relative humidity is February (73%).
The month with the lowest relative humidity is June (47%).
Average rainfall in September
Bailey, CO
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is July (3.58").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in September
Bailey, CO
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (23.7 days).
The month with the least rainy days is November (3.5 days).
Average snowfall in September
Bailey, CO
- Average snowfall in September: 0.08"
The month with the highest snowfall is March (9.72").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Bailey, CO
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (11.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Bailey, CO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in September
Bailey, CO
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is July (4.3 days).
Average UV index in September
Bailey, CO
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Bailey, CO
- Average cloud cover in September: 17
The month with the most cloud cover is April (Cloud cover 28).
The months with the least cloud cover are September, October and November (Cloud cover 17).
Average visibility in September
Bailey, CO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Bailey, Colorado, USA
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